Dear friend. The extentvof ...

Dear friend. The extentvof TDS will indicate the extent of dissolved salts or minerals present in water which will present taste to water. The acceptable value of TDS is 500 mg/l as per WHO water quality standards. But since RO process almost eliminates the TDS, remineralisation is done by adding essential minerals to restore the mineral balance which will also give taste to water apart from adding hardness to it which makes it safe for the heart also. Apart from  testing for TDS, and orally tasting for taste, other tests may not be essential as taste is to a large extent subjective.